Eclipse can be found via this link. I downloaded Eclipse Classic 4.2.1 (eclipse-SDK-4.2.1-linux-gtk.tar.gz). A tutorial for configuring eclipse is provided here. Here a walkthrough the screens:

After a while i got:

That did not look good, but let's ignore this kind of error...Then the installation finished and eclipse needed to be restarted. Now i wanted to follow the tutorial about installing the Android SDK, but eclipse came up with the following question:

So this was easier than the steps described at developer.android.com...Then a last restart to eclipse and there it was: New Project -> Other:

So everything is in place now. Next step is to build my first app for the Nexus 7...